Kevatta Sutta 80.12

80.12

api ca, bhikkhu, yathā nimittā dissanti, āloko sañjāyati, obhāso pātubhavati, brahmā pātubhavissati, brahmuno hetaṃ pubbanimittaṃ pātubhāvāya, yadidaṃ āloko sañjāyati, obhāso pātubhavatī’ti.

But by the signs that are seen—light arising and radiance appearing—we know that divinity will appear. For this is the harbinger for the appearance of the Divinity, namely light arising and radiance appearing.’